Paper making machine



Oct. 4, 1932. E. E. BERRY PAPER MAKING MACHINE Filed Deo. 29, 1930 2Sheets-Sheet 1 yeu-7 DE o effry,

Oct. 4, 1932, E, E, BERRY v 1,880,688

PAPER MAKING MACHINE Filed Dec. 29, 1950 2 Sheets-Sheet v2 Z8 WEE-Patented Oct. 4', 1932 ZUNITED STATES PATENT OFFICE EARL E. BERRY, OFBELOIT, ,WISCONS'IIL .ASSIGNOR TO BELOIT IRON `WISCONSIN, A QOBPORATION0F WISCONSIN WORKS,A F BELOIT,

rar-nn name noma Application nled December 29, 1930. Seria111o. 505,355.

This invention relates to a paper making machine and more particularlyto ber distributing, evening and crossing devices as',

used in connection with the forming part of a paper machine.

In a copending application, entitled Paer making machine, Serial No.378,236, ed July 15, 1929, I have described a novel type of paper makingmachine wherein the ber 17 1930, a particularly advantageous type ostock distributing device for use in a paper machine such as disclosedIand claimed in my earlier application.

The present invention relates to improvements in connection'with thetype of aper machine disclosed in the applications re erred to and theseimprovements include more articularly the use of novel means foretiecting the crossing of the bers to obtainV a well formed sheet ofpaper. A

It is therefore an object of this invention to provide improved bercrossing means in combination with the forming part of a paper machine.

It is a further important object of this invention to provide improvedber crossin means in connection`withltheow of stoc onto the formin partof a paper machine wherein the stoc r is immediatel subjected to suctionand an initial depos1t` of bers takes placed before the stock ows outfrom under the slice or slices.

Other and further important objects of this invention will he a arentand from the disclosures in the specl cation and the accompanyingdrawings.

This'invention z(in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure l is a broken, front side elevational i view of the 4formingportion of a paper machine embodying the principles of my invention,shown more or less diagrammatically.

Figure 2 is an enlarged fragmentary sectional view taken longitudinallyof the forming part of the machine :and transversely of the stoc-kdistributing device.

'Figure 3 is a fragmentary sectional view -taken substantially on lineIII-III of Fig.

ure 2.

Figure 4 is a fragmentary sectional view take; substantially on lineIV'-IV of Figure Fi re 5 is a broken top plan view of a ber crossmgdevice embodying the principles of my invention. i

As shown on the drawings:

The type of paper making machine, indicated generally by the referencenumerallO,

is described in detail in my copending application Serial No. 496,146previously referred to and therefore only a brief description is deemednecessary here. The main elements of the paper machine 10 are astationary, sectional suction device 11, an endless perforated flexiblebelt 12 trained over the o en top of said suction device 11 andhydraulically balanoed `with respect thereto, andi a forming wire 13associated with the traveling cover or belt 12 and supported upon saidtraveling belt or cover 12 t rough a wire 14 of coarser mesh.

A stock delivery means, indicated generally by the reference numeral 15is mounted over the head end of the suction device 11.

ISaid stock delivery means 15 includes a cyl- 18, which in turn aresupported on a suity able frame structure.

The frame structure for supporting the cylinder 16 suitably comprises apair of end walls 20 resting on and suported from side rails 21 of themachine. wall 23 (Flgure 2) also secured to the end wall's 20 and spacedat its lower edge above the forming wire 13, as at 24, extendstransversely of the wire to serve as a retaining wall for a pond ofstock that is created above the forming wire 13. One or more slices 26forms an adjustable fourth retaining wall for the pond of stock 25, theslice being also supported from the end Walls 20 and being vertically'adjustable by suitable mechanism 27. Any

suitable means may be employed for rotating the cylinder 16 at differentspeeds, such means being here shown as a sprocket Wheel 28 on thecylinder 16 driven through reducing gears 29 by a sprocket chain 30 froman means may be employed for preparing the stock for delivery to theinterior of the cylinder 16.

The longitudinal slot 34 and the spaced apertures 35 allow the escape ofstock both upwardly and downwardly, the apertures 35 serving to preventany settling out and accumulation of stock in the lower portion of theconduit. As indicated in Figure 2, the stock fills the conduit 33 anddischarges through the longitudinal slot 34 down over the sides of saidconduit into the rotating drum 16, building up a head of stock withinthe drum. The amount of head depends primarily on the adjustment of theslice and the rate of delivery of stock to the conduit. While I preferto discharge the stock into the interior of the drum through the agencyof a tubular conduit of suitable diameter, it

l, will be understood that my invention contemplates the use of anysuitable trough structure or other means for delivering and distributingthe stock into the rotating cylinder through one or both ends thereof.

The stock is confined, at the ends of the i rotating cylinder 16 by theend Walls above mentioned, each of which has an inner section 36supported from the conduit 33. Escape of stock through the jointsbetween the walls and the periphery of the cylinder 16 and between theinterior ofthe cylinder 16 and the inner Wall sections 36 is preventedby suitable packing 37 .Y

The stock delivery cylinder 16 is of a foralninous constructionthroughout its lengthintermediate the inner section walls 36 and in itspreferred embodiment comprises a cylinder havingrowsof smallholes 38closely arranged together and through which the stock iiows into thepond 25 defined by the walls 20, 23 and the slice 26. These holes 38provide nozzle-like delivery stock as it passes through and to break upany bunches or collections of fiber, if any should reach this point onthe machine. The stock thus flows onto the wire in a condition ofuniform distribution and with-absence of any eddy currents.

In connection with the rotating cylinder 16, there is provided in theinterior thereof a trough 40 with an'outlet pipe 41 and a shower pipe 42mounted abovel said trough for cleaning the interior of the cylinder.doctor 43 a'djustably mounted from one wall of the trough 40 is adaptedto scrape against the interior surface of the rotating drum 16 to causeany dirt or water adhering thereto to flow down into the trough 40. Asimilarly adjustable doctor 44 is mounted externally of the drum 16 toscrape against its outer surface.

.The mechanism thus far described is sub stantially that disclosed andclaimed in my copending application entitled Paper making machine SerialNo. 496,146, filed November 17, 1930. My present invention is directedprincipally to a fiber crossing device that is preferably used inconnection with the mechanism of that application as just described,although yit will be understood that this fiber crossing device about tolbe; described may also be used withlpaper making equipment of differentconstruction.

The ber crossing device, indicated generally by the reference numeral45, comprises one or more reciprocally mounted agitating members 46(Figures 2 to 5 inclusive). Each of the reciprocating members 46comprises a bar- 47 having'at one end a clevis 48 for connection with aninnerend of an eccentric rod 49. For this purpose, the bar 48 extendsthrough an end wall 20 provided with a suitable packing gland 50.Y -Theeccentric rod 49 is connected to a shaft 51 driven b means of a chain 52and s rockets 53 from t e shaft of the motor 31. ,ach of the fibercrossing devices 46 is provided with a plurality vof spaced blades orarms 54 mounted transversely of the bar 47. Said iber crossing devicesare positioned in close proximity to the forming wire 13 and extendtransversely of the direction of said forming wire. Reciprocal movementof the fiber crossing devices causes the blades 34 to create gentle eddycurrents in the stock lying directly above the forming wire 13 and theseeddy currents result in a general crossing of the fibers and theformation of a well matted web.v

As is Well known, the general direction of the fibers in a body of stockflowing onto a Fourdrinier machine is that of the ow oi stock, with the'result that paper formed on Fourdrinier machines is distinctly weakerin tensile strength in a direction across the machine than it is in adirection with the machine.

The construction of my device for uniformly distributing the stock ontothe forming Wire and the use of my fiber crossing mechanism greatlyeliminates the normal tendency of the fibers to assume a directionparallel to the `direction of travel of the forming wire. In the firstplace, the pond of stock 25 is relatively quiescent, so that theconditions for the deposit of fibers on the Wire are similar to thoseobtaining in hand making paper operations. In the second place the stockin the pond 25 is immediately subjected to suction, with the result thatan initial deposit of fibres is effected before the stock passes underthe slice. The proximity to the wire of the reciprocating fiber crossingdevices makes possible a maximum fiber crossing effect, since the fibersafter having their directions changed are immediately deposited andcaused to bond and interlace with other fibers. The result is anunusually well-formed sheet having exceptionally great strength in anacross-themachine direction.

I am aware that many changes may be made and numerous details ofconstruction may be varied through a Wide range without departing fromthe principles of this invention, and I, therefore, do not purposelimiting the patent granted hereon otherwise than necessitated bytheprior art.

I claim as my invention:

1. In combination with means creating a pond of stock over the formingportion of a paper machine, fiber crossing means submerged in said pondcomprising a bar having spaced transverse blades secured thereto andmeans for reciprocating said bar in close proximity to said formingportion.

2. In a paper machine, a forming part including a wire and suction meansoperatively associated therewith, means defining a pond of stockoversaid wire while subject to suction and reciprocally mounted fibercrossing means within said pond in close proximity to said wire. d

3. In a paper machine, a forming part including a wire and suction meansoperatively associated therewith, means defining a pond of stock oversaid wire while subject to suction and reciprocally mounted bars havingtransverse blades within said pond in close proximity to said wire.

4. In a paper machine, a forming part including a stationary suctiondevice, a forming wire traveling thereover, means defining a pond ofstock at the head end over said forming wire and suction device andfiber crossing means reciprocally mounted for movement within said pondin closeproximity to said forming wire.

5. In a paper machine, a. forming part including a stationary suctiondevice, a form- .within said pond in close proximity to said formingwire.

0 7. In a paper machine, a formmg part m- 8 .cluding a suction device, atraveling forming wire operatively associated therewith, walls includinga slice defining a pond of inowing stock above a portion of the formingwire subjected to suction, bars extending through side walls into saidpond and having on their inner portions spaced blades transverselyarranged in proximity to the forming wire and means connected to the .0duter ends of said bars for reciprocating said ars.

8. In a paper machine, a forming part including a suction device, atraveling forming wire operatively associated therewith, walls includinga slice defining a pond of inowing stock above a portion of the formingWire subjected to suction, bars extending through side walls into saidpond and having on their inner portions spaced blades transverselyarranged in proximity to the forming wire, means connected to the outerends of saidbars for reciprocating said bars and means for distributingstock uniformly v the entire width of said pond. 105

9. In the manufacture of paper including the process of applying paperstock to the forming wire of a paper machine from a pond formed abovethe wire, the step comprising gently agitating the stock in closeproximity to the forming wire to cause the stock fibers to becomethoroughly crisscrossed and to form a well matted deposit on said wire.

10. The process of manufacturing paper 115 which comprises supplyingpaper stock to a forming wire from a pond located above the wire, gentlyagitating the stock in said pond at a point in close proximity to theforming wire to' aid in the formation of a well matted 120 sheet andapplying suction through said wire -to remove water from the stockthereon.

In testimony whereof I have hereunto subscribed my name at Beloit, RockCounty, Wiscousin.

EARL E. BERRY.

